Chemical dispenser



FIG. 1 is a perspective view of a chemical dispenser showing my new design;

FIG. 2 is a front end elevational view thereof, on an enlarged scale;

FIG. 3 is a rear end elevational view thereof, on an enlarged scale; and

FIG. 4 is a side elevational view thereof, the opposite side being a mirror image. 

The ornamental design for a chemical dispenser, as shown and described. 